EX-1
from SC 13D
1 page
Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-1(k)(1) Under the Securities Exchange Act of 1934, as Amended, the Persons Named Below Agree to the Joint Filing on Behalf of Each of Them of a Statement on Schedule 13d and Any Amendments to It With Respect to the Common Shares, No Par Value, of Catalyst Semiconductor, Inc. and Further Agree That This Joint Filing Agreement Be Included as an Exhibit to Those Joint Filings. Dated: June 22, 2007 J. & W. Seligman & Co. Incorporated by /S/ Thomas G. Rose Name: Thomas G. Rose Title: CFO Seligman Spectrum Focus (Master) Fund by /S/ Lawrence P. Vogel Name: Lawrence P. Vogel Title: Authorized Person William C. Morris by Frank J. Nasta, as Attorney-In-Fact for William C. Morris /S/ Frank J. Nasta
12/34/56
